XUI is a Java and XML RIA platform for building smart app's. Swing, AWT and other widget sets can be used on a range of hardware. XUI's modular framework can help many aspects of application development. NetBeans and Eclipse are available.

The JProgress project provides tools for connectivity with Java clients and the Progress database. JProgress provides an n-tier software architecture for database access for executing remote requests over WANs and the Internet.

Didactor is an Open Source E-learning environment, written in Java and built on top of MMBase (http://www.mmbase.org). Didactor consists of over 20 didactic components, like e-portfolio, assessment, competence management, group discussion, chat etc.

Limegreen is a cross platform java application template which streamlines the process of creating applications. It provides experience on each platform, including an .exe for Windows, .app and .dmg on Mac OSX and a .jar for others. The below link isn't

XML Bridge Next Generation (XBridgeNG) is an item/ ticket data exchange format along with an execution runtime based on Apache Ant. It allows you to set up integrations between various tools like Serena TeamTrack, HP QualityCenter, Perforce and many more

Celerity, an open-source, Java based data-flow architecture that provides high performance with fine data granuality. Celerity offers a module based programming environment, which can parrellelize across processors, machines and architectures.

Ezmid is a small API for small devices supporting JME/MIDP. It intends to make MIDP programming even easier, providing classes for communication, persistence, XML parsing and user interface. All of then written on the top o MIDP 2.0 API.

This project develops Mozilla Rhino Components which are essentially wrappers for common Java components/resources/API's. Right now we have wrappers for Jakarta POI, JDBC, JAX-RPC (WSDL/SOAP) and HTTP (XMLHttpRequest).

busDriver is a Java Servlet based framework that can be used together with spring and hibernate to allow for flexible page design working together with solid application server frameworks. Its edge over current MVCs is it's performance and flexibility

equanda is an tool to generate a J2EE application based on a XML description of the data and constraints. It generates the access objects, a powerful base user interfaces (with help for more powerful stuff) and support for web services with versioning.